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comparison of chary impact test and izod impact test

Introduction to impact test
Impact test is a common method to  determine the impact strength or toughness of a material by measuring  the total energy that the material can absorb. The brittleness of the  material directly determines the total energy that can be absorbed.  Generally, the absorption rate of ceramic or glass is lower than that of  copper or aluminum. material.

The impact test can be divided into  Charpy impact test and Izod impact test or simply support beam impact  test and cantilever beam impact test according to the type of impact.

Impact specimen type: According to the  gap, the impact specimen can be divided into U-notch impact specimen and  V-notch impact specimen, as shown below:

Related test methods:
GB/T 229 metal Charpy impact test method
ISO148-1 metallic materials-charpy pendulum impact test-part 1:test method
ASTM E23 standard test method for notched bar impact testing of metallic materials
EN 10045-1 charpy impact test on metallic materials-part 1:test method (V-and U-notches)
GB/T1843 plastic cantilever beam impact test method
ISO180 plastics-determination of izod impact strength
ASTM D256 standard test method for determining the izod pendulum impact resistance of plastics

Schematic diagram of Charpy impact test and Ai impact test:

   
        Charpy impact test (simple beam impact test)                      Izod impact test (cantilever beam impact test)

Comparison of the main differences between the Charpy impact and the Izod impact test

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